Castle heart

Castle Heart Magic Device

Value 9000 copper Weight 15 kilograms

Effects: When placed as a standard action, the Castle Heart begins to grow a castle of granite around itself. It creates 10 cubic meters of granite per round, at a distance of up to 30 meters. It cannot create granite within 5 meters of a creature that does not want granite to grow near it. Control over where the granite is created is given to whichever creature is touching it: if there's more than one creature, the first one to touch it has control.